CN104407334B - A kind of closed loop width phase method of testing for radar simulation equipment - Google Patents
A kind of closed loop width phase method of testing for radar simulation equipment Download PDFInfo
- Publication number
- CN104407334B CN104407334B CN201410768321.6A CN201410768321A CN104407334B CN 104407334 B CN104407334 B CN 104407334B CN 201410768321 A CN201410768321 A CN 201410768321A CN 104407334 B CN104407334 B CN 104407334B
- Authority
- CN
- China
- Prior art keywords
- phase
- amplitude
- module
- radar
- attenuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
- G01S7/4021—Means for monitoring or calibrating of parts of a radar system of receivers
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of closed loop width phase method of testing for radar simulation equipment, radar receiver can be with receiving intermediate frequency signal, the amplitude and phase data of signal can be obtained by processing, there is the measurement function of amplitude and phase, therefore, follow-up signal transacting can replace the traditional instrument measurements such as frequency spectrograph and vector network analyzer to obtain the phase shift curve of the attenuation curve of attenuator and phase shifter in passage with the receiver of radar simulator, test speed greatly improves, eliminate channel error simultaneously, precision greatly improves, the Targets Dots error amount of simulation is set to tend to the theoretical value of equipment, have a good application prospect.
Description
Technical field
The present invention relates to a kind of closed loop width phase method of testing for radar simulation equipment, belongs to radar target simulation
Technical field.
Background technology
Radar simulation equipment is simulated in laboratory true reappearance radar practical work process, it is necessary to which the part simulated includes
Transmission signal is produced, target echo signal is produced, artificial antenna Beam synthesis, target echo signal down coversion is received, in simulation
Frequency receives to be controlled with gain, needs to be realized to signal amplitude, phase by substantial amounts of attenuator and phase shifter during simulation
Simulation and control, therefore, the precision of the simulation precision and attenuator, phase shifter of radar simulation equipment is closely related, therefore,
The a large amount of attenuators and phase shifter demarcated in radar simulation equipment are needed before simulated experiment, guinea pig work is being carried out after calibration
Make.
The tunnels analogy of radar target signal by D/A as shown in figure 1, produce intermediate frequency transmission signal, target echo simulation mould
Power, phase, the delayed data for the target position data adjustment echo that block is simulated as needed；Then signal reaches Beam synthesis
Module, work(be divided into No. four guinea pig antennas and, gun parallax, trim, secondary lobe passage；Enter back into medium frequency reception tunnels analogy
The reception gain control module of radar receiver；Finally enter A/D sampling, Radar Signal Processing obtain echo-signal power,
The information such as phase, delay, calculate target location, wherein schematic diagram such as Fig. 2 of antenna beam synthesis and medium frequency reception module
It is shown.
The basic width phase control cellular construction that the phase of adjustment echo is used, as shown in Figure 3, it is necessary to determine attenuator respectively
And phase shifter power and phase characteristic.Measurement of traditional scaling method to amplitude is tested using frequency spectrograph, every with program pass
The program control code of one attenuator, one group of power results is obtained, obtained exemplary power attenuation curve, as shown in figure 4, phase uses
Vector network analyzer, with the phase initial value of channel network is obtained, the control code of phase shifter is then traveled through, obtains one group of phase
As a result, then in conjunction with above-mentioned frequency spectrograph test result and vector network analyzer result, obtain final power and controlled with decay
The corresponding relation and phase of code processed and the corresponding relation for shifting to control code, and the work(demarcated is imported when simulated test starts
Rate and phase-noise code rule form, reach the purpose of accurate simulated target and radar function.
But above-mentioned method can use in destination channel negligible amounts, but for tens passages
Complex Radar simulation system is less applicable, oversize the time required to passage primary calibration, and the passage after calibration is using a period of time
Afterwards with the aging of temperature and device, system attenuation characteristic can change with shifting to characteristic, so as to cause radar simulation equipment precision
Decline, and then influence simulation effect.
The content of the invention
The invention aims to oversize the time required to overcoming prior art calibration, the passage after calibration is using one section
With the aging of temperature and device after time, system attenuation characteristic can change with shifting to characteristic, so as to cause radar simulation equipment
Precise decreasing, and then the problem of influence simulation effect.The closed loop width phase method of testing for radar simulation equipment of the present invention, by
The receiver of radar simulator coordinates follow-up signal transacting to replace the measurement of the traditional instruments such as frequency spectrograph and vector network analyzer
The phase shift curve of the attenuation curve of attenuator and phase shifter in passage, test speed greatly improves, while eliminates channel error, essence
Degree greatly improves, and the radar target point mark error amount of simulation tends to the theoretical value of equipment, has a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of closed loop width phase method of testing for radar simulation equipment, it is characterised in that：Comprise the following steps,
Test signal is done pulse by step (1), the radar pulse signal used during using guinea pig as test signal
After compression processing, obtain with the echo signal for specifying delay；
Step (2), demarcated by measurement function of the echo signal to radar receiver, according to the echo signal of measurement
Amplitude-phase demarcates the power correction value V and initial phase of receiver；
Step (3), amplitude-phase characteristic measurement, target echo are carried out to the target echo analog channel of radar simulation equipment
Analog channel includes analogue echoes module, antenna beam synthesis module, the medium frequency reception module being in series, from intermediate frequency receiving module
Measure the amplitude-phase characteristic of analog channel forward step by step, obtained upper level amplitude will be measured and substituted into phase result under determination
The amplitude and phase of one-level, the amplitude/phase characteristic curves until measuring afterbody analogue echoes module.
A kind of foregoing closed loop width phase method of testing for radar simulation equipment, it is characterised in that：Step (2), passes through
Measurement function of the echo signal to radar receiver is demarcated, according to the echo signal amplitude phase calibration receiver of measurement
The method of power correction value V and initial phase is,
(1) time-domain information with the echo signal for specifying delay is obtained, includes the amplitude X of the peak point of echo signal；
(2) according to formula (2), the power correction value V of receiver is obtained,
P=20log (X)+V (1)
Wherein, P is the power of the analog channel of guinea pig；
(3) the initial phase theta of receiver is calculated according to pulse compression algorithm.
A kind of foregoing closed loop width phase method of testing for radar simulation equipment, it is characterised in that：Step (3), intermediate frequency
The measuring method of the amplitude-phase characteristic of receiving module is as follows,
(1) medium frequency reception module is divided into four sections of tests, every section of dynamic range is 30dB, successively to every section of amplitude-phase spy
Property is tested；
(2) attenuator of analogue echoes module in analog channel, antenna beam synthesis module is controlled to control signal most
Small-power value；
(3) attenuator in medium frequency reception module is decayed according to certain stepping, record power during decay each time
With phase feedback value, the magnitude-phase characteristics form of composition attenuation and phase；
(4) form is substituted into the test of the amplitude-phase characteristic of next stage antenna beam synthesis module.
A kind of foregoing closed loop width phase method of testing for radar simulation equipment, it is characterised in that：Step (3), antenna
The measurement of the amplitude-phase characteristic of Beam synthesis module, comprises the following steps,
(1) antenna beam synthesis module is put and is allowed to be in radar receiver work in original state, control intermediate frequency connection module
Make scope；
(2) attenuator is gradually decayed, records adjustable attenuation code, amplitude and phase during each decay；
(3) phase shifter phase of the attenuator in unattenuated state, gradual antenna beam synthesis module is kept, is recorded every
Phase shifting control code, amplitude and phase during secondary phase shift,
(4) by the test result of record, the variable quantity of intermediate frequency connection module is subtracted, obtains the amplitude-phase of analogue echoes module
Characteristic curve.
A kind of foregoing closed loop width phase method of testing for radar simulation equipment, it is characterised in that：Step (3), echo
The measurement of the amplitude-phase characteristic of analog module, comprises the following steps,
(1) put analogue echoes module makes part in original state, control intermediate frequency connection module with antenna beam synthesis module
In radar receiver working range；
(2) attenuator is gradually decayed, records adjustable attenuation code, amplitude and phase during each decay；
(3) phase shifter phase of the attenuator in unattenuated state, gradual mobile analogue echoes module is kept, is recorded every
Phase shifting control code, amplitude and phase during secondary phase shift,
(4) by the test result of record, the variable quantity of antenna beam synthesis module is subtracted, obtains the width of analogue echoes module
Spend phase characteristic curve.
The beneficial effects of the invention are as follows：The closed loop width phase method of testing for radar simulation equipment of the present invention, radar connect
Receipts machine in addition to it can handle to obtain target range, orientation, pitching etc. point mark data, be able to can also be passed through with receiving intermediate frequency signal
Processing obtains the amplitude and phase data of signal, i.e., the measurement function with amplitude and phase, therefore, by connecing for radar simulator
Receipts machine coordinates follow-up signal transacting the traditional instrument measurements such as frequency spectrograph and vector network analyzer can be replaced to obtain in passage
The attenuation curve of attenuator and the phase shift curve of phase shifter, test speed greatly improves, while eliminates channel error, and precision is significantly
Improve, the error amount of Targets Dots tends to the theoretical value of equipment after simulation, has a good application prospect.
Brief description of the drawings
Fig. 1 is the system block diagram of the analog channel of guinea pig.
Fig. 2 is antenna beam synthesis module and the structure chart of medium frequency reception module.
Fig. 3 is the schematic diagram of traditional width phase control unit.
Fig. 4 is the schematic diagram of attenuator attenuation curve.
Fig. 5 is the flow chart of the closed loop width phase method of testing for radar simulation equipment of the present invention.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.Following examples are only used for clearly
Illustrate technical scheme, and can not be limited the scope of the invention with this.
The closed loop width phase method of testing for radar simulation equipment of the present invention, radar receiver can receive intermediate frequency letter
Number, in addition to it can handle to obtain target range, orientation, pitching etc. point mark data, also the amplitude of signal can be obtained by processing
And phase data, i.e., the measurement function with amplitude and phase, therefore, the follow-up signal with the receiver of radar simulator
Processing can replace the traditional instrument measurement such as frequency spectrograph and vector network analyzer obtain in passage the attenuation curve of attenuator and
The phase shift curve of phase shifter, test speed greatly improves, while eliminates channel error, and precision greatly improves, target point after simulation
The error amount of mark tends to the theoretical value of equipment, as shown in figure 5, comprise the following steps,
Step (1), according to the radar pulse signal that guinea pig is used as test signal, test signal is done into pulse pressure
After contracting processing, obtain, with the echo signal for specifying delay, such as using power as -10dBm, 200 km pulsewidths are 10us bands
Wide 10MHz echo-signal is as test signal, after process of pulse-compression, obtains with the echo signal for specifying delay；
Step (2), demarcated by measurement function of the echo signal to radar receiver, according to the echo signal of measurement
The power correction value V and initial phase of amplitude-phase demarcation receiver, computational methods,
(1) time-domain information with the echo signal for specifying delay is obtained, includes the amplitude X of the peak point of echo signal；
(2) according to formula (2), the power correction value V of receiver is obtained,
P=20log (X)+V (1)
Wherein, P is the power of the analog channel of guinea pig；
The initial phase theta of receiver, is calculated by pulse compression algorithm, obtains the phase initial value of measured signal.
Step (3), amplitude-phase characteristic measurement is carried out to the analog channel of guinea pig, analog channel includes what is be in series
Analogue echoes module, antenna beam synthesis module, medium frequency reception module, go forward to measure analog channel step by step from intermediate frequency receiving module
Amplitude-phase characteristic, obtained upper level amplitude will be measured the amplitude and phase for determining next stage are substituted into phase result, directly
To the amplitude/phase characteristic curves for measuring afterbody analogue echoes module.
Wherein, the measuring method of the amplitude-phase characteristic of medium frequency reception module is as follows,
(1) because the effective dynamic range of radar receiver is about 30dB, and the dynamic of medium frequency reception module exceedes
120dB, it is therefore desirable to medium frequency reception is divided into four sections of tests, medium frequency reception module is divided into four sections of tests, every section of dynamic range
For 30dB, every section of amplitude-phase characteristic is tested successively；
(2) attenuator of analogue echoes module in analog channel, antenna beam synthesis module is controlled to control signal most
Small-power value；
(3) attenuator in medium frequency reception module is decayed according to certain stepping, record power during decay each time
With phase feedback value, the form of composition attenuation and phase；
(4) form is substituted into the test of the amplitude-phase characteristic of next stage antenna beam synthesis module.
The measurement of the amplitude-phase characteristic of antenna beam synthesis module, comprises the following steps,
(1) antenna beam synthesis module is put and is allowed to be in radar receiver work in original state, control intermediate frequency connection module
Make scope；
(2) attenuator is gradually decayed, records adjustable attenuation code, amplitude and phase during each decay；
(3) phase shifter phase of the attenuator in unattenuated state, gradual antenna beam synthesis module is kept, is recorded every
Phase shifting control code, amplitude and phase during secondary phase shift,
(4) by the test result of record, the variable quantity of intermediate frequency connection module is subtracted, obtains the amplitude-phase of analogue echoes module
Characteristic curve.
The measurement of the amplitude-phase characteristic of analogue echoes module, comprises the following steps,
(1) put analogue echoes module makes part in original state, control intermediate frequency connection module with antenna beam synthesis module
In radar receiver working range；
(2) attenuator is gradually decayed, records adjustable attenuation code, amplitude and phase during each decay；
(3) phase shifter phase of the attenuator in unattenuated state, gradual mobile analogue echoes module is kept, is recorded every
Phase shifting control code, amplitude and phase during secondary phase shift,
(4) by the test result of record, the variable quantity of antenna beam synthesis module is subtracted, obtains the width of analogue echoes module
Spend phase characteristic curve.
Data after present invention test have two kinds, and respectively attenuator decay initial data, content corresponds to for attenuation
Amplitude-phase data list；Phase shifter phase shift initial data, content are that phase shift code corresponds to amplitude-phase data list, will be decayed
Device initial data is transformed into attenuation (relative power) form corresponding with decay code, includes phase place change data caused by decay；
Phase shifter initial data is transformed into the correspondence table of phase shift value and phase shift code, includes changes in amplitude number caused by phase shift
Form is imported during according to, use, for the amplitude-phase of simulated target, due to having coupling effect between phase shifter and attenuator
Should, it can cause the change of power during phase shift, phase place change can be caused again during decay, and variable quantity be can not ignore, and can be used and be changed
For calculation uncoupling, accurate phase and amplitude controlled quentity controlled variable is obtained, the process of iterative calculation mode uncoupling is, to original
Amplitude and phase characteristic do corresponding relation and the phase control of amplitude controlled quentity controlled variable and control code that dullness is obtained after simple process
The corresponding relation of amount and control code processed,
Attenuator characteristic：Pow=S1 (c1, phase), phase shifter characteristic：Phase=S2 (c2, pow)
C1, c2 are amplitude controlled quentity controlled variable, phase controlling amount, need passage being placed on the power and phase of determination during use,
Attenuator controlling value can be calculated according to power meter, according to the characteristic curve obtained before, obtains the variable quantity of phase with setting phase
The difference of position, the controlled quentity controlled variable of phase shifter, the difference between changes in amplitude amount and setting value that phase shifter is brought are obtained according to this difference
Value obtains new adjustable attenuation code and phase changing capacity as second of foundation calculated, and left and right can obtain essence to iteration three times successively
True amplitude control code and phase control code.
General principle, the main features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (1)
- A kind of 1. closed loop width phase method of testing for radar simulation equipment, it is characterised in that：Comprise the following steps,Test signal is done pulse compression by step (A), the radar pulse signal used during using guinea pig as test signal After processing, obtain with the echo signal for specifying delay；Step (B), demarcated by measurement function of the target echo signal of simulation to radar receiver, according to the mesh of measurement Mark the power correction value V and initial phase of echo signal amplitude phase calibration receiver；Step (C), amplitude-phase characteristic measurement is carried out to the target simulation passage of radar simulation equipment, target simulation passage includes Analogue echoes module, antenna beam synthesis module and the medium frequency reception module being in series, from intermediate frequency receiving module step by step forward The amplitude-phase characteristic of analog channel is measured, obtained upper level amplitude and the width of phase result substitution determination next stage will be measured Degree and phase, the amplitude/phase characteristic curves until measuring afterbody analogue echoes module；The step (B), demarcated by measurement function of the echo signal to radar receiver, according to the echo signal of measurement The power correction value V and the method for initial phase of amplitude-phase demarcation receiver be,(B1) time-domain information with the echo signal for specifying delay is obtained, includes the amplitude X of the peak point of echo signal；(B2) according to formula (1), the power correction value V of receiver is obtained,P=20log (X)+V (1)Wherein, P is the power of the analog channel of guinea pig；(B3) the initial phase theta of receiver is calculated according to pulse compression algorithm；The step (C), the measuring method of the amplitude-phase characteristic of medium frequency reception module is as follows,(C1) medium frequency reception module is divided into four sections of tests, every section of dynamic range is 30dB, successively to every section of amplitude-phase characteristic Tested；(C2) attenuator of analogue echoes module in analog channel, antenna beam synthesis module is controlled to control signal in least work Rate value；(C3) attenuator in medium frequency reception module is decayed according to certain stepping, record power and phase when decaying each time Position value of feedback, form the form of attenuation and phase；(C4) the amplitude-phase characteristic result that intermediate frequency is tested to obtain is substituted into the amplitude-phase of next stage antenna beam synthesis module The test of characteristic；The measurement of the amplitude-phase characteristic of antenna beam synthesis module, comprises the following steps,(C11) antenna beam synthesis module is put and is allowed to work in radar receiver in original state, control intermediate frequency connection module Scope；(C12) attenuator is gradually decayed, records adjustable attenuation code, amplitude and phase during each decay；(C13) phase shifter phase of the attenuator in unattenuated state, gradual portable antenna Beam synthesis module is kept, is recorded Phase shifting control code, amplitude and phase during each phase shift,(C14) by the test result of record, the variable quantity of intermediate frequency connection module is subtracted, obtains the amplitude-phase spy of analogue echoes module Linearity curve；The measurement of the amplitude-phase characteristic of analogue echoes module, comprises the following steps,(C21) analogue echoes module is put and is allowed to be in antenna beam synthesis module in original state, control intermediate frequency connection module Radar receiver working range；(C22) attenuator is gradually decayed, records adjustable attenuation code, amplitude and phase during each decay；(C23) phase shifter phase of the attenuator in unattenuated state, gradual mobile analogue echoes module is kept, is recorded every time Phase shifting control code, amplitude and phase during phase shift,(C24) by the test result of record, the variable quantity of antenna beam synthesis module is subtracted, obtains the amplitude of analogue echoes module Phase characteristic curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768321.6A CN104407334B (en) | 2014-12-11 | 2014-12-11 | A kind of closed loop width phase method of testing for radar simulation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768321.6A CN104407334B (en) | 2014-12-11 | 2014-12-11 | A kind of closed loop width phase method of testing for radar simulation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104407334A CN104407334A (en) | 2015-03-11 |
| CN104407334B true CN104407334B (en) | 2017-11-14 |
Family
ID=52644979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410768321.6A Active CN104407334B (en) | 2014-12-11 | 2014-12-11 | A kind of closed loop width phase method of testing for radar simulation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104407334B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051786A (en) * | 2017-10-30 | 2018-05-18 | 北京航天福道高技术股份有限公司 | A kind of broadband target simulator verification platform and verification method |
| CN107728127B (en) * | 2017-11-29 | 2020-11-06 | 湖南纳雷科技有限公司 | Radar simulation test system |
| CN108319157A (en) * | 2018-01-04 | 2018-07-24 | 上海机电工程研究所 | Millimeter wave amplitude phase accuracy-control system and method |
| CN116540193B (en) * | 2023-07-03 | 2023-09-19 | 中国科学院空天信息创新研究院 | Method for testing amplitude phase stability of radar receiver in full temperature range |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010230549A (en) * | 2009-03-27 | 2010-10-14 | Mitsubishi Electric Corp | Generator for simulated clutter |
| CN102023293B (en) * | 2010-09-14 | 2013-06-05 | 中国兵器工业第二0六研究所 | Radar target intermediate frequency (IR) echo simulation system based on multi-beam amplitude-comparison angle measurement and control method thereof |
| CN102323570B (en) * | 2011-05-24 | 2013-03-13 | 中国人民解放军国防科学技术大学 | Method for estimating magnitude-phase characteristics of radar target echo signal simulator |
-
2014
- 2014-12-11 CN CN201410768321.6A patent/CN104407334B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104407334A (en) | 2015-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104407334B (en) | A kind of closed loop width phase method of testing for radar simulation equipment | |
| CN107728127B (en) | Radar simulation test system | |
| CN107390192B (en) | Quick amplitude and phase consistency measuring method for phased array weather radar | |
| CN111289950B (en) | Signal channel calibration method and device based on correlation and least square | |
| US10145874B2 (en) | S-parameter measurements using real-time oscilloscopes | |
| CN102095430B (en) | Sensor dynamic error frequency-domain correction technology based on step response | |
| CN104345319B (en) | A kind of error calibration method of incoherent Doppler lidar wind speed | |
| CN104931797A (en) | Method for measuring dielectric constant of lossy medium based on wave-transparent mechanism | |
| CN104635035B (en) | The quickly calibrated system and method for signal source power is realized based on fraction block structure | |
| CN105738924B (en) | The calibration system and method for satellite navigation signal simulator pseudorange control accuracy | |
| CN110672932B (en) | Automatic calibration method for multi-antenna navigation darkroom test signal level | |
| CN104950169A (en) | Method and system for measuring frequency characteristics of high-speed FOG (Fiber Optical Gyroscope) | |
| CN102608434B (en) | Measuring method for scattering coefficient of millimeter wave black body | |
| US6710737B1 (en) | Calibrator for radar target simulator | |
| CN109088675B (en) | Channel calibration method and device for radio frequency signal source | |
| CN103954945A (en) | Method for carrying out full-scale calibration on microwave distance-measuring radar based on optical fiber delay line | |
| CN100514083C (en) | Method for measuring the scattering parameters of a multiport apparatus with non-sinusoidal measurement signals | |
| Wang et al. | Reduced parameter model on trajectory tracking data with applications | |
| CN104237876A (en) | Method and device for determining distance from target support to calibration support | |
| CN109375183B (en) | Missile-borne distance high-resolution radar high-precision dynamic distance calibration system and method | |
| CN106383341B (en) | One kind going italic target seeker radar signal processor precision calibration method | |
| CN105846916B (en) | A kind of time-delay calibration device and method towards coherent vector signal generation system | |
| CN104634574B (en) | Engine test bench characteristic curve preparation method | |
| CN111289951B (en) | Wide pulse equivalent simulation method and device based on least square | |
| CN105721076A (en) | Time delay calibrating device facing coherent vector signal generating system and time delay calibrating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |